Nut-lock.



0. B; FOSTER.

NUT LOCK.

Patented Mal 6, 1917.

I that it joints,

UNITED strains PATENT OFFICE.

ORVAL 1B. FOSTER, 0F FORE-SMITH, ARKANSAS, ASSIGNOR OF ONE-HALF TO FRED W.

TRAYLOR, OF FORT SMITH, ARKANSAS.

nor-Lock.

enable others skilled in the art to which it appertains to make and use the same. I

This invention relates to an improved nut lock and an object of the invention is to provide a device of this features of construction. 7

One of the features of construction is to provide a bolt, the shank of which. is provided with a key way having a notch at kind having novel one end, and designed to receive akey,

which has a hook at one end to engage said notch, in combination with a nut, the outer face of which is provided with a series of recesses, to receive the other end of the wire key.

Another object of the invention is to incline one wall of each of said recesses, so the non-inclined wall of an adjacent recess, so, that when the nut is tightened to a certain degree so that'the end of the wire key to be bent engages the non-inclined wall, the nut may be forced, so that the bent end may engage the inclined wall of the next recess. I

In practical fields the details of construction may necessitate alterations falling within the scope of what is claimed.

The invention comprises further features and combination of parts as hereinafter set forth and shown in the drawings.

In the drawings Figure 1 is a view partly in'elevationjand partly in section of the improved nut lock device constructed in accordance Withthe tion showing another nut-lock device.

invention. I

Fig. 2 is an end view of the boltshank and the nut.

. Fig. 3 is a detail view of the bolt.

Fig. {is a view in elevation and insec Fig. 5 is an end view'of Fig. 4. I I Referring more especially to the drawings 1 designates the bo1t,.the-shank of Specification of Letters Patent. Application filed October 9, 1916. Serial No. 124-,530. I 5

have invented a new and construction of the a Patented Mar. 6, 191

which is provided with an elongated key way 2 extending longitudinally of the shank, to receive a wire key 3. This key on its inner end is provided with a hook 4 which extends partiallytoward the outer end of the key. The hook engages a correspondingly constructed recess or notch 5 at the inner end of the key way, to prevent outward and upward movement of the hook. end of the key. The outer: face of the nut 6 (which is threaded upon the bolt) isprovided with a plurality of recesses 7, the outer ends of which are closed by the walls 8. One of the side walls of each recess 7 .is inclined, and such inclined. wall is designated by'th'e numeral 9. When applying .the nut Sthe key is arranged in the key way so that its hook willengage the notch 5, after which the nut 6 is screwed upon the shank of the bolt. The outer end of the key, after thenut 6 has been tightened to a certain degree, is-bent at right angles to the body of the key, so as to engage the inclined wall 9 of one of said recesses 7. The outer extremity of the right angle bent portion- 10 engages the wall 8, thereby preventing the nut from backing ofl the shank of the bolt, while the inclined wall prevents further tightening of the nut. However,

when the outer end of the key is bent at right angles to the body of the key, to aline with the non-inclined .wall 11, the nut 6 may be forced until the bent ends can engage theinclined wall of the next recess. In Figs. 4 and 5 the notch 5'is radial instead of. inclined, and-the opposite walls of the recesses 7 are perfectlyfparallel, While both endsof each recess 7' are-open.

The invention having been set forth wha is claimed as new and useful is In a. nut lock, the combination of a boltr ated key way extending l'onhaving. an elon I gitudinally of its shank-and a nut threaded on the shank 'provided'upon one-face with a p'luralityof substantially radial recesses, I ofane'longated wire keyin ,said key-way,

its outer end to be bent laterally "of the shank of.

to engage one of said recesses of thenut, one well of each recess being inclined to be the bolt. in side elevation and m-- dially and tangentially in front elevation engaged by the bent end of said hey, the name to this specification in the presence of inner end of the key-Way having a notch two subscribing Witnesses.

which extends partially toward the outer end of the bolt shank, theinner end of the ORVAL FOSTER" key having a hook extending correspond- \Vitnesses:

ingly to and engaging said notch. N. A. LASATER,

In testimony whereof 'I have signed my BERTIE DUOKWORTH. 

